MR. ISTVAN GERGELY MD
NPI 1225992209
Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery in Rushville, IN

NPI Status: Active since December 12, 2025

Contact Information

1300 N MAIN ST
RUSHVILLE, IN
ZIP 46173
Phone: (765) 932-4111

NPI Profile Information
Primary Taxonomy
Group Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Orthopaedic Surgery
Adult Reconstructive Orthopaedic Surgery

About ISTVAN GERGELY

This page provides the complete NPI Profile along with additional information for Istvan Gergely, a provider established in Rushville, Indiana with a medical specialization in Orthopaedic Surgery, focusing in adult reconstructive orthopaedic surgery . The healthcare provider is registered in the NPI registry with number 1225992209 assigned on December 2025. The practitioner's primary taxonomy code is 207XS0114X with license number 01098621A (IN). The provider is registered as an individual and his NPI record was last updated March 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.

NPI: 1225992209
Provider Name: MR. ISTVAN GERGELY MD
Gender: Male
Entity Type: Individual
Location Address: 1300 N MAIN ST RUSHVILLE, IN 46173
Location Phone: (765) 932-4111
Mailing Address: 438 STERCHI DR EVANSVILLE, IN 47711
Mailing Phone: (812) 604-7196
Is Sole Proprietor?: Yes
Enumeration Date: 12-12-2025
Last Update Date: 03-12-2026
Code Navigator

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Orthopaedic Surgery Adult Reconstructive Orthopaedic Surgery
Taxonomy Code: 207XS0114X
Type: Allopathic & Osteopathic Physicians
License No.: 01098621A
License State: IN
Taxonomy Description: Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1225992209, we treat the final digit (9) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 4

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 4

Pos 8

Unchanged

Pos 9

Doubled → 0

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 2 → 4 9 → 18 → 9 2 → 4 0 → 0

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 2 + 4 + 5 + 1 + 8 + 9 + 4 + 2 + 0 + 24 = 61

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1225992209.